Clutch.



No. 823,260. PATENTED JUNE l2, 1906. J. J. CAMPBELL & H. C. JOHNSON.

CLUTCH.

APPLIOATION FILED moua. 1905.

2 'SHEETS-SHEET l.

unulllll l :sim/21 No. 823,260. PATENTED JUNE l2, 1906. J. J. CAMPBELL d: H. C. JOHNSON.

CLUTCH. APPLICATION FILED 13110.28. 1905.

2 SHEETS-SHEET 2.

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UNITED STATES PATENT OFFICE.

JOHN J. CAMPBELL AND VIrIIRAlVI C. JOHNSON, OF BUTLER, PENNSYLVANIA, ASSIGNORS TO T. W. PHILLIPS MANUFACTURING COMPANY, OF BUT- LER, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

CLUTCH.

Speccaton of 'Letters Patent.

Patented Juneff12, 1906.

Application filed December y28, 1905. Serial No. 293,634.

To ct'ZZ whom it 'ma/y cm1/cern:

Be it known that we, JOHN J CAMPBELL and HIRAM C. JOHNSON, citizens of the United States of America, residing at Butler, in the county ofButler and State of Pennsylvania, have invented certain new and useful Improvements in Clutches, ofwhich `the followring is a specification, reference being had ley-wheel upon a shaft and easily and quicklyreleasing the same at any desired time. In this connection our improved 'clutch is adapt- Aed'to be manually operated to grip a pulley- Iwheel, andin-releasing a pulley-wheel the clutch is automatically actuated by gripping a portion ofthe same.` To this end we employ a conventional form of pulley-wheel, shaft, andgripping-shoes to en age a pulleywheel, and 'in connection with t ese elements we vhave devised novel mechanism for easily and quickly actuating the shoes to grip a pulley, said mechanism being lautomatically'actuated torelease said shoes when a portion of the same is held stationary.

With the vabove and other objects in view the invention consists in the novel construction, combination, and arrangement of parts to be hereinafter` more fully described and then specifically lointed out in the claims, and, referring to the drawings accompanying this application, like-numerals of reference designate corresponding parts throughout the several views, in which- Figure 1`is a vertical sectional view of our improved clutch, partly in side elevation. Fig.v 2 is van end'view ofthe same. Fig. 3 is a front elevation ofI one of the gripping-shoes. Fig. 4 is a b'ottom'p'lan ofthe same. Fig. 5`is .a rear velevation of our improved clutch. Fig. 6 is a horizontal sectional view of the same. Fig. 7 is a .front elevation of a pinion-carrying yplate. Fig. 8 is a side elevation of the same. Fig. 9 is a front elevation of a supportingplate used in connection with the clutch. Fig. 10 is a detail view in elevation of a portion `of our improved clutch.

-In the accompanying drawings the reference-numeral 1 designates the end of a shaft upon which we mount our improved clutch.

The clutch as constructed by us consists-of a collar 2, which is secured or keyed upon the end of the shaft, as at 3. The collaris clearly illustrated in Figs. 1, 6, 9, and 1() of the drawings, and by referring to said figures it will be observed that the rear end of the collar.y is provided with an annular flange 4, while the kforward end of' the collar is provided with diametrically-op osed su ortincrlates 5 5. Each plate is prvided a vertically-disN posed guideway '6 and has its edges pierced, as at 7 7L This end of the collar is also provided with an annular recess 8, into which is adapted to t a sleeve 9, carried centrally of a pinion-carrying plate 10. The pinion-carrying plate 10 consists of pierced arms 11,

carrying outwardly-extending lugs 12 12, said lugs having horizontally-alining apertures 14 14 formed tlierein. The arms 11 are pierced, as at 15, inorder that they may be secured to the pierced edges of the supporting-plates 5 5 of the collar2.

Mounted upon the collar 2 is the hub 16 of a pulley-wheel 17, said'hub being retained upon the collar 2 by an annulus or ring 18, secured to the flanged end ofthe collar 2 by set-screws or bolts 19. The forward *end of the hub portion 16 is considerably shorter than the rear end to accommodate the supporting-plates of the collar 2, the pinion-oarrying plate, and other mechanism which will be presently described.

In the guideways 6 of the supportingfplates are mounted the Shanks 2O 20 of arc-shaped shoes 21, the outer-faces ofsaid shoes being covered with Babbitt metal to 'frictional'ly engage the inner sides 23 of the pulley 17. The Shanks 20 2() of the shoes-21 are-provided with vertically-disposed racks 24, .braced by central webs 25.

Revolubly mounted between the lugs 12 12 of the inion-carrying plate are pinions 26 26, sai pinions being adapted to mesh with the racks 24 '24 ofthe shoes 2121. p

Revolubly mounted in the sleeve y9 ofthe pinion-carrying plate is an outwardly-extending rod 27, said rod having an enlarged threaded section 28, While upon its outer end 1s Xed a hand-Wheel 29. Revolubly mounted upon the rod 27 is a sleeve 30, the bore 31 of said sleeve being threaded, as at 32, to engage the threaded enlarged section 2S of the rod 27. The inner end of the rod 27 is contracted and provided With peripheral threads, as at 32', to receive a nut by means of which the rod is retained in the sleeve 9 and the sleeve is contracted, as at 31. Upon the contracted end of the sleeve 30 is mounted a racl'r-sleeve 33, adapted to mesh With the pinions 26 26. The sleeve 33 is retained upon the contracted end 3l of the sleeve 30 by a nut 34. The outer end of the sleeve 30 1s provided with a conventional form of hand-Wheel 35, said Wheel being of a larger diameter than the hand-Wheel 29, carried by the rod 27.

I n order that the mechanism just described may be. dust-proof and free from danger of being struck by a moving object, We incase said mechanism Within the end of the pulley 17 by a cap or hood 36. The cap or hood is provided With a central opening 37 to permit of the free movement of the sleeve 30 and the rod 27, and said cap or hood is secured to the peripheral edges of the pulley 17 by a plurality of set-screws or bolts 3S.

In practice the shaft 1 may be a revoluble element entirely independent of the pulley 17, or vice versa but in describing the general operation of our improved clutch We Will assume that the shaft 1 is continually revolving and at predetermined times it is desired to revolve the pulley 17 in unison with said shaft. By the construction of our improved clutch it will be observed that the collar 2, the supporting-plates 5 5, the pinioncarrying plate 10, the pinions 26, and the shoes 21 all revolve With the shaft 1 When it is 1n operation, the pulley 17 being entirely independent of any movement of the shaft 1, except When our improved mechanism is operated to place the shoes 21 in engagement With said pulley. i

In the accompanying drawings We have illustrated the shoes 21 21 as being disengaged from the pulley 17, and in case it is desired to move said shoes into engagement With the inner sides 23 of the pulley the hand- Wheel 29 of the rod 27 is gripped with one hand, While the hand-Wheel 35 of the sleeve 30 is partially rotated with the other. The rotation of the sleeve 30 upon the threaded section 28 of the rod 27 partially revolves the pinions 26 through the medium of the racksleeve 33, and as said pinions partially rotate the shoes 21 21 are moved into engagement With the pulley 17 and the shoes 21 21 and the pulley 17 move in unison with the shaft 1.

Should it be desired to release the shoes,

the hand-Wheel 29 is gripped, and as the rod 27 is held stationary the revolving of the sleeve 30 upon the threaded enlargement 23 of the rod causes the rack-sleeve 35 to move outwardly, partially rotating the pinions 26 26 and withdrawing the shoes 21 21 fromthe pulley 17.

From the foregoing operation it Will be observed that the shoes are automatically released When the hand-Wheel 29 is held stationary, the rod 27, upon Which the hand- Wheel is mounted, being rotatable independently of the revolving collar 2 and its appurtenant parts.

It is obvious that in connection with the pulley-Wheel 17 a belt Will be used, and in some instances the pulley may represent the revoluble member, While the shaft 1 may be temporarily stationary until the shoes are placed in engagement With the pulley-Wheel..

Such changes in the construction and operation of our improved clutch as are permissible by the appended claims may be resorted to Without departing from the spirit and scope of the invention.

What We claim, and desire to secure by Letters Patent, is-

1. In a clutch, the combination With a revoluble shaft, of a collar Xed upon said shaft,

supporting-plates carried by said collar, said plates having guideWays formed therein, pinion-carrying plates secured to said supporting-plates, a pulley revolubly mounted upon said collar, shoes mounted Within said pulley and adaptedto engage the inner sides thereof, racks carried by said shoes and en` gaging in the guideways of said supportingplates, pinions journaled in said pinioncar rying plate, an outwardly-extending rod mounted in said pulley, a sleeve mounted upon said rod, means movable with said sleeve to move said shoes into engagement With said pulley, substantially as described.

2. In a clutch, the combination With a shaft, a pulley journaled upon said shaft, shoes mounted in said pulley and rotatable With said shaft pinion-carrying plates carried by said shaft, pinions journaled in said pinion-carrying plates and rotatable With said shaft, said pinions being adapted to engage said shoes, movable means mounted Within the interior of said pulley and ro- IOO IIO

IIS

tatable independently of said shaft, to rotate 4. The combination Witharevoluble shaft, In testimony whereof We afix our signaa pulley-Wheel, shoes carried by said shaft tures in the presence of two Witnesses. and adapted to engage seid pulley-Wheel, of JOHN J C lMWPBELL racks carried by said shoesI pinions engaging said racks, a rack-Sleeve engaging said pin- HIRAM C' JOHNSON' ions, means engaging said sleeve to longi- Witnesses: tudinally move the rack-sleeve and thereby H. ISEMAN, move said shoes, substantially as described. W. H. HITE. 

